What is this?These corner connectors are helpful to connect two U shape aluminum channel LED strips together. Widely used on aluminum channel LED strip systems.What will I get?Product Name: LED Channel Corner ConnectorsColor: WhiteMaterial: PC PlasticInner Size: 17.8x7mm / 0.7"x0.28"Overall Size: 45x45x12mm / 1.77"x1.77"x0.47"Screw Size: 3x12mm / 0.12"x0.47" (Diameter*Height)Package Content: 8 x Corner Connectors; 16 x ScrewsAre there any advantages of the product?Made of PC plastic material, with good temperature resistance.The screws included here will make the corner connection part tighter.How to use it?Just connect the end of aluminum channel LED strips to the connector, then fixed with screws.What should I notice?Please check the size of your aluminum channel LED strip before buying.